Pulsations, eruptions, and evolution of four yellow hypergiants A. M. van Genderen, A. Lobel, H. Nieuwenhuijzen, G. W. Henry, C. de Jager, E. Blown, G. Di Scala and E. J. van Ballegoij A&A, 631 (2019) A48 Published online: 17 October 2019 DOI: 10.1051/0004-6361/201834358